Apparatus for preventing incrustation in steam boilers



Dec. 17, 1929. J. KQBSEFF 33 5 APPARATUS FOR PREVENTING INCRUSTATION IN STEAM BOILERS original Filed 001;. 17, 1921 2 sheets-sneer 1 Dec. 17, 1929. J. KOBSEFF APPARATUS FOR PREVENTING INGRUSTA'I'ION IN STEAM BOILERS Original Filed Oct. 17, 1921 2 SneetS-Sheet DO O 009 0G 0 O00 O00 QQM KM INVENTOR ORNW' Patented Dec. 17, 1929 UNITED STATES JOA KIME KOBSEFF, OF BIZERIIA, TUNISIA APPARATUS FOR PREVENTING INCRUSTATION IN STEAM BOILERS Original application filed October 17, 1921, Serial No. 508,171, and in ArgentinaApril 11, 1923.

and this application filed August 21, 1923. Serial No.'658,509.

This invention relates to an apparatus for preventing the incrustation of boilers and is particularly adapted to carrying out the method disclosed in my co-pending application Serial No. 508,171 filed October 17, 1921,

of which application this application is a division.

The apparatus includes, broadly, means which operates in conjunction with thesteam from the boiler to generate the mucilaginous substance and means by which said substance may be conducted to and introduced into the boiler. I

I have illustrated in the drawing one form of apparatus by means or" which the method may be carried out but it is to be understood that the invention is not limited to that form of apparatus as many modifications may be made in the construction.

In the drawing:

Figure 1 is an elevation of the selected em bodiment showing the same mounted on the boiler, the boiler being conventionally illustrated;

Figure 2 isanenlarged elevation partly in section showing the relationship of the various parts;

' Figure 3 is a top plan elevation partly in section;

Figure 4 is a sectional view disclosing the interior perforated cylinder in which the mucilaginous substance is generated; and

Figure 5 is a top plan view of said perforated cylinder.

The selected illustrative embodiment of the apparatus includes a cylinder 1 havmg c1rcumferentially radiating ribs or fins thereon. This cylinder 1 has communication with the boiler, the incrustation of which is to be prevented, through a pipe 2 which extends from adjacent the upper end of the cylinder to the steam space of the boiler and is provided with a manually operable valve 3 by means of which the steam from the boiler may be permitted, at the desired intervalsor continuously, to enter the cylinder. Communication is established between the lower end of the cylinder and the boiler by means of a pipe 4 which pipe extends below the water line of the boiler and is provided with a manually Divided operable valve 5. The upper end of the cylinder is closed by suitable means which, in the embodiment selected for illustration, includes a plate 6 having a flange and groove engagement with the upper edge of the cylinder. This plate 6 is held in tight engagement with the upper edge of the cylinder to seal the latter by means of a yoke 7 and bolts 8 which extend through the yoke and are adapted to force the plate downwardly onto the upper edge of the cylinder.

This plate 6 is provided with a blow-0E valve 9 through which communicationis established between the interior of the cylinder 1 and the atmosphere.

A. perforated cylinder 10 having a removable cover 11 with a yoke 12 thereon at one 'end and a similar cover 13 with a yoke 14 thereon at the other end, is mounted within the outer cylinder 1. These covers 11 and 13 are held in place on the cylinder 10 by a tie rod 19 which extends through the cylinder and the yokes 12 and 14 and is provided with tightening nuts which abut against the yokes 12 and 14:. 7

A perforated tube 18 is arranged within the cylinder 10 and extends axially from end to end of said cylinder, the upper end of the tube extending preferably through the cover 11 and the lower end abutting against the cover 13. This latter cover is provided with an opening 16 having a flange 17 extending upwardly into the tube 18 to position the latter, through which opening communication is established between the tube 18 and the chamber 15 at the lower end of the cylinder 1, from which chamberthe pipe 4 extends. It will be noted that the cylinder 10 rests upon the annular shoulder at the lower end of the cylinder 1, thus isolating the chamber 15 from the remainder or upper portion of said cylinder, and closely fits the upper portion of the cylinder but that surrounding the inner cylinder is a space defined by the wall of the cylinder 10 and the interior face of the ribbed portion of the cylinder 1. In the cylinder 10 is located the material from which. the mucilaginous substance is generated,

I have found that vegetable seeds such as flax, hemp, or similar seeds may be used entirely successfully and I contemplate in certain instances the use of soda which may be mixed with the seeds to soften the husks of the same to facilitate the extraction of the gluten contained by the seeds. Furthermore, I have found that the use of fecula (starch) assists .in the formation of the desired mucilaginous substance. A mixture of vegetable seeds, soda; and starch wherein the soda is equal to about one one-hundredth of and the starch to about one two-hundredths of the weight of the seeds I have found produces" the desired result. It is of course to be understood that I contemplate the use of the vegetable seeds either with or without the soda starch.

In operation, the vegetable seeds or the mixtureof vegetable seeds, soda and starch :having beeniplaced in the perforated cylinder 10, the valve 3 is opened permitting steam from the steam. space of the boiler to enter the condensing cylinder 1. The steam entering "the cylinder l fills the latter and is condensed because of the radiationaiiorded by the ribs or fins thereon and the condensed steam passes into the cylinder 10 through the per- Lfor'ations therein. This condensed steam on coming in contact with the vegetable seeds takes 'up the mulcilaginous substance from lao the seeds and produces an emulsion but does "not-@extractthe oily compounds from the seeds which of-courseare.1n ur1ous1to steam boilers.

fF-Ihe emulsion thus formed passes, upon the opening .of the valve 5, which opening may either be periodic-or continuous, through the :pipe 4 to the water of the boiler. The emulsion mixed with the water 'of the boiler en- -'Velops the nascent saline deposits which re- -sult from'the .evaporationofthe water within the boiler and sinks with the deposits to ithebottom of the boiler from which position Lr'emovalmay conveniently be carried out.

Ofcourse, it is to be understood that the introduction of the .mucilaginous substance into the water of the boiler not only prevents the formationof'fresh incrustations but also removes the incrustations which have already been formed on the walls of the boiler and that the method and. apparatus may be successfully employed in either boilers using fresh or sea water.

While I have described a particular form of apparatus by means of which the method maybe carried out, it is to be'undcrstood that this apparatus may be varied in its details of construction without departing from the spirit ofthe invention or exceeding the scope ofthe claims.

What I claim is:

1. The combination with a steam boiler of a container a 'mucilaginous substance ar ranged in'a hollow column in said container,

means for conveying steam from the boiler 7 above the water level thereof to the interior of said hollow (charm "of muci-laginous substance, means for effecting the condensation of the steam, means for permitting the water water of condensation from the condensing. means to said last mentioned means through the mucilaginous bearingsubstance.

3. In a device of the class described the combination with a container having a steam 11 inlet pipeat-the top ithereof and :a water outlet pipe at the bottom thereof of a cylindrical perforated receptacle :mounted within the container and having a centrally perforated core, the said-containerhavinga condensing space surrounding the receptacle'which space is inaccessible to the inlet and outlet pipes except through the receptacle, and a mudla ginous bearing substance arranged within the receptacle whereby the steam entering through the central core thereof "willpenetrate said substance, pass to the condensing space, andthe waterof condensa tion will pass V I through the mulcilaginous substance into the central core to the water outlet pipe.

4. In "a device of the class described the combination with a container having'an annular condensing space in the inner wall thereof and an outlet space at the bottom thereof,-of an inlet space at the top thereof, 1

a steam inlet pipe communicating with the top space, a water outlet pipe extending from thebottom space, a receptacle mountedjwithin the container isolating the top and bottom spaces from the condensing space except through the receptacle, the said receptacle having perforations inthe wall and'in the top and bottom thereof.

5. In a device of the class described the combination with a container having an-annular condensing space in the inner wall thereof, an inlet space atthe top thereof and an outlet space at the bottom thereof, of a steam inlet pipe communicating with "the.

top space, a water outlet pipe extending from the bottom space, a receptacle mounted within the container isolating the top-and bottom spaces from the condensing space except through the receptacle, the said receptacle having perforations in the wall and i'n' the top and bottom 'thereof,and a perforated central core opening at the top and bottom thereof into-topandbottom spaces of'the container arranged within said receptacle.

6. In a combinationof'the classdescribed the combination with a container of a receptacle mounted therein, said container having a steam inlet at the upper end thereof and a water outlet at the lower end thereof, a mucilaginous bearing substance in said receptacle, said receptacle being constructed and arranged wthin the container in such manner that the steam entering the upper end of the container must pass through the mucilaginous substance in said receptacle, prior to its reaching the water outlet pipe, and means for condensing the steam in its passage from the inlet to the outlet.

7. In a device of the class described the combination with a container having a steam inlet pipe at one end thereof and a water outlet pipe at the other end thereof, a perforated receptacle mounted within the container and having a perforated core therein, the said container having a condensing space between its wall and the receptacle which space is inaccessible to the inlet and outlet pipes except through the receptacle.

8. In a device of the class described the combination with a container having a condensing space in the inner wall thereof, an inlet space at the top thereof of a steam inlet pipe communicating with the top space, a water outlet pipe extending from the bottom space, a receptacle mounted within the container isolating the top and bottom spaces from the condensing spaces except through the receptacle, the said receptacle having perforations in the wall and in the top thereof.

9. I11 a device of the class described the combination with a container having a condensing space in the inner wall thereof, an inlet space at one end thereof and an outlet space at the other end thereof, of a steam inlet pipe communicating with the inlet space, a water outlet pipe extending from the outlet space, a receptacle mounted Within the container isolating the inlet and outlet spaces from the condensing space, the said receptacle having perforations communicating with the condensing space,'and a perforated central core communicating with the inlet space and with the receptacle. i

10. In a device of the class described the combination with a container having a steam inlet pipe at one end thereof, a water outlet pipe at the other end thereof, a perforated receptacle mounted within the container and having a perforated core therein, the said container having a condensing space between its wall and the receptacle, and means for conducting water of condensation from the condensing space to the Water outlet pipe.

11. In a device of the class described, the combination with a container of a receptacle mounted therein, said receptacle containing a mucilaginous bearing substance and having a chamber extending substantially from end to end thereof, means for conducting steam to August, 1923.

. JOAKIME KOBSEFF. 

